Door-operating mechanism



Aug. 6, 1929. P. R. DoBsoN 1,723,503,

DOOR OPERATING MECHANI SM Filed July 6, 1928 Patented Aug. 6, 1929.

UNITED STATES PATENT OFFICE.

PERCY ROBERT DOBSON, OF CALGARY, ALBERTA, CANADA, ASSIGNOR TO BELL EQUIP- MENT COMPANY LIMITED, OF CALGARY, ALBERTA, CANADA.

DOOROPERATING MECHANISM.

Application filed July 6,

rllhis invention relates to door operating mechanism adapted to openA and close doors mounted on hinges or rollers, and so constructed as to be operated from within by means of cranks.

A further object oit my device to lock the doors in both. the open and the closed positions, and a still further object to provide means remote from the door for opening and closing` the said door which. would be para 'ticularly advantageous in garages, warehouses or the like.

llVhile doors of garages and iarehmises have been particularly mentioned, the use of.' my device is not limited to doors but may be applied to gates, or other devices` where remote control is desirable.

lilielfcrrinpT tothe drawings in which sin'lilar characters refer to similar partsM Fig. l, is a plan showing the device applied to 'folding doors, in which two sections are lolded back on each door jamb. 1t also shows in dot-ted lines the door in the open position.

Fig. 2, is a partial elevation showing the bell cranks and the cable operating the said bell cranks.

Fig'. 3, is a detail of the hand operating.;r device and the method oit adapting thereto the remote controller.

Mounted upon the doors 7, of a `garage near the top, and extemfling from the sides towards the middle, are slotted members El, and rigid ly secured upon the door frame just above the doors are brackets :lell cranks 10, are rotatably mounted in the brackets 9, one end of which engages in the slotted members 8, and on the other end of the said bell cranks pulley wheels l1., are secured.

The bell cranks are so arrangi-sd that when the doors are closed they are practically at right angles to the door, and in this position the doors cannot be opened :from the outside, and when the doors are opened the cranks boing similarly related the doors cannot accidentally swing.

A pulley 1Q, is mounted upon an operatingY shaft 13, which shaft is rotatably mounted in brackets 1&1, and 15, the brackets being' 1nount- 1928. Serial No. 290,817'.

-t .e pulley l2, is such that halt' of one revolution will open the doors and one balif of one revolution in the reverse direction will close them.

To lgive remote control, a secondary pulley 18, is mounted upon the sbalft 13, a. similar pulley lll, being secured upon a duplicate operating shatt 2l), which sha'lt is mounted in suitable, brackets 21, located within the garage. 'lhe operatingl sha'l'ft 2() has a handle pivoted to the base thereof, a nd a cable 23, passes arouinl the l{nllleys 1S, and 19, being secured thereto similarly to the cable 1T. A turnlnickle 2st., is provided itor adjustment purposes by means of which unnecessary slack in lthe cable is eliminated.

Wb at I claim isM 1. .Door operatingr mechanism conilirising in combination with doors or the like, slotted members mounted, upon the said doors, cranks engaging the slotted members, brackets mounted upon the door iframe with cranks rotatably mounted therein, pulley wheels mounted upon. the said cranks, an operatingr mechanism suitably located in relation to the said door, cable counectioi'is between the said operating mechanism and the cranks, and means :tor .'iplpllyinnr power 'from the said operatinj.;1 .iinechaliism thrmiirh the cables to the cranks to open and close the doors.

2. Door operating mechanism comprising a door with slotted meu'ibers mounted thereon, bracket members mounted upon the door ilran'ring, cranks rotatably mounted in the said brackets eiipagring the slotted members of the door, cable connections to the said cranks iifrom an operating;I device, au operatingl device consisting; of a rotatable rod mounted in suitably located brackets, the said rod being.;r provided with operating handle, all substzmtially as described.

PERCY R. DOBSON. 

